Speed-indicator.



PATENTED FEB. 24, l903.

G. E. KELLY.y SPEED INDIGATOE.

APPLIUATION FILED 00T. 1 8, 1901.

I0) MODEL.

/lv VENTO/2 A TTHN l UNITED STATES y PATENT OEEICE.

CLARENCE EDWAN KELLY, OF ANDERSON, INDIANA, ASSIGNOR'OF ONE- HALF TO WILLIAM H. FORSE, JR., OF ANDERSON, INDIANA.

SPEED-*INDICATOR SPECIFICATION forming parttof Letters Patent'No. 721,199, dated February 24, 1903.

Application filed October 18, 1901. Serial No'. 79,169. (No model.)

T0 all whom it' may concern,.-

Beit known that I, CLARENCE EDWAN KELLY@ citizen ofthe United States, and a resident of Anderson, in 'the county of Madison and State of Indiana, have invented a new and Improved Speed-Indicator, of which the following is a full, clear, and exact description.- Y

This invention're'lates to a device for indicating the speed or other movement of machinery of any sort-for example, for indicating thespeed of a vehicle in traveling over the ground.

This specification is a specific description of two forms of the invention, while the claims are definitions of the actual scope thereof.

Reference is to be' had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding partsin all the views.

Figure l is a face view of a speed-indicatorl embodying my invention. Fig. 2 is a rear elevation thereof. Fig. 3 is a section on the line 3 3 of Fig. 4, and Fig. 4 is a section on the line a 4 of Fig. 3.

The apparatus has a suitable case a, provided with a bracket a', by which the case may be fastened to a suitable support. In case of use on a vehicle the support will be provided by some convenient part of the bicycle-frame. This bracket may be of any form desired, so as to accommodate the position in which the indicator is to be placed.

' The indicator is provided (see Fig. l) with a dial a2, which may be glass-covered, if desired, and over which plays a needle b, carried on a rotary arbor b', mounted in the case. Fastened to the arbor b', back of the dial a2,

is avpinion c, which is meshed with a toothed sector c', arranged within the case and swinging around a center c2, which may be a stubshaft or other means for carrying the sector.

d indicates a spring which is arranged within the case and connected at one end to the sector, the other end of the spring being fastened to a screw or stud d held in the case.

e indicates a cam which is mounted on an arbor e' in the case, this arbor extending out through the back of the case and carrying a needle e2, which turns over a dial a3, formed on the back of the case. By throwing the needle e2 from one position to another the cam e may be caused to press against the spring d, thus to increase or decrease the tension thereof, and thus regulate the resistance to the'movement of the sectorY c'. This euables the indicator to b e set according to the speed by which the primary movement part of the device is driven, as will be more fully described hereinafter.

The case o; carries rigidly a tubular arm f, and on this arm is mounted the auxiliary elongated hub f of a wheel formed of two parts f2 and f3, which are suitably fastened together. Carried between these parts f2 and f3 to turn therewith is a tire f4, of rubber or the like. The hollow arm f carries loosely a pin g, and this pin bears against the walls of a notch c3 in the sector c', so that axial movement of the pin will throw the sector against the action of the spring d. The wheel formed of the parts f2 and f3 is hollow, and.

located movably within this wheel is a spider formed of a plurality (here shown to be four) of ribs g', which spider is fastened to the pin g and moves therewith. The ribs g have inclined edges against which'bear grooved weights g2. These Weights are of essentially spherical form and are confined to move radially within the wheel f2 fgby partitions f5, these partitions forming radial passages (best shown in Fig. 4) and each passage receiving one rib g. Owing to the arrangement described, the ribs g" are movable laterally within the wheel f2 f3, carrying the pin g with them, or vice versa.

Now when the wheel is turning the grooved spherical weights g2 are forced outward, and these weights acting between the inclined edges of the ribs g and the' wall f3 ofthe wheel force the ribs to the right. (See Fig. 3.) This causes a like movement to be given to the rod g, and the sector c is therefore thrown. `Movement of the sector c' around its axis will turn the arbor b', and thus throw the needle b over the dial a2, the movement of the needle being commensurate to the extent to which the ribs g are moved. Now it is obvious that according to the speed at IOO which the wheel f 2 f3 turns the spherical weights g2 will be moved outward, and when the wheel is turning slowlyT the needle l) will be ymoved slightly, but when the wheel is turning rapidly lthe movement of the needle willbecorrespondinglyincreased. Byproper adjustment of the parts the needle may be made to indicate exactly the speed of the vehicle or other machinery with which the indicator is used. The tiref4 of the wheelfg]23 is adapted to run in the rotary part of the vehicle or other apparatus, and of course the adjustment must be changed according to the diameter of the wheel or other rotary part. This adjustment may be effected by the cam e and spring d, by means of which the resistance to the movement of the sector c may be increased or diminished, so as to bring about an accurate action of the indicator-needle b.

Various changes in the form, proportions, and minor details of my invention may be resorted to without departing from the spirit and scope of my invention. Hence I consider myself entitled to all such variations as may lie within the scope of my claims.

Having thus described my invention I claim as new and desire to secure by Letters Patentl. In a speed-indicator, the combination with a casing, of an indicating device, a hollow arm carried thereby, a wheel turning on the hollow arm, a rod running through the hollow arm, an inclined rib carried on the rod within the wheel, radial partitions within the wheel forming a passage in which the inclined rib is situated, and a centrifugallyoperating weight lying in said passage and acting on the inclined rib.

2. A speed-indicator, comprising an indicating device, a rotary member, a reciprocating rod or pin mounted coincident with the axis thereot` and adapted to actuate the indicating device, a radial inclined rib attached to the rod and located within the rotary member, a centrifugally-operating weight within the rotary member and running on the inclined rib, for the purpose specified, and means in the rotary member for guiding said centrifugally-operating part radially along the rib.

3. A speed-indicator, comprising a casing, a hollow arm attached thereto, a rotary member having au elongated hub inclosing and turning on the arm, a rod movable axially through the arm, an inclined rib carried by the rod within the rotary member, and a centrifugally-operatiug weight located within the rotary member and running on the inclined rib, to drive the rod.

4. A speed-indicator, comprising the combination with a supporting member, of a hollow arm carried thereby, a wheel having an elongated hub mounted to turn on the arm the wheel being adapted to engage its periphery on the part whose speed is to be measured, a tire on the wheel, centrifugally-operating devices mounted in the wheel, and means for transmitting the movement of the said devices, such means including a rod mounted to move axially in the hollow arm.

5. A speed-indicator, comprising a rotary member, a radial guide thereon, a grooved weight mounted in the guide to be centrifugally operating, an inclined rib bearing in the groove of the weight, the rib being moved by the weight, and means for transmitting the movement of the rib.

6. A speed-indicator, comprising a rotary member, a radial guide thereon, a grooved weight mounted in the guide to be centrifugally operating, an inclined rib bearing in the groove of the weight, the rib being moved by the weight, and means for transmitting the movement of the rib, said means for transmitting the movement of the rib comprising a longitudinally-movable'rod projecting from the wheel or rotary member coincident with the axis thereof.

7. A speed-indicator, comprising a rotary member, a grooved weight mounted therein to be operated by centrifugal force, an inclined rib located in the rotary member and bearing in the groove of the weight, said rib being actuated by the weight, and means for transmitting the movement of the weight.

8. A speed-indicator, comprising a rotary member, a grooved weight mounted therein to be operated by centrifugal force, an inclined rib located in the rotary member and bearing in the groove of the weight, said rib being actuated by the weight, and means for transmitting the movement of the rib, said means comprising a rod movable longitudinally and passing from the rotary member in position coincident with the axis thereof.

9. A speed-indicator, comprising asu pport, an indicator proper carried by the support, a hollow arm carried rigidly by the support, a rotary member having an elongated hub mounted loosely on and inclosing the hollow arm, a rod projecting through the hollow arm to drive the indicator proper, and centrifugally-operating devices in the rotary member for driving the rod.

10. An indicator, comprising a case or support, an indicator proper, a hollow arm carried by the case or support, a rod mounted to move longitudinally in the hollow arm and serving to actuate the indicator proper, a rotary memberhaving an elongated hub mounted loosely on and inclosing the hollow arm, and centrifugally-operating devices in the rotary member, for imparting longitudinal movement to the rod.

11. In a speed-indicator, the combination of a casing orsupport, an indicator held thereby, a hollow arm carried by the casing or support, a wheel having an elongated hub mounted looselj7 on the arm of the casing, means forming a radial guideway in the wheel,a centrifugally-actuated member carried loosely in IOO IIO

IZO

the guideway, an inclined rib engaged by said name to this `specification in the presence of centrifugally-actuated member, and a rod attwo subscribing witnesses.

tached to the rib and passed axially from the g wheel through the hollow arm and having 'CLARENCE EDWAN KELLY' 5 connection with the indicating devices to im- Witnesses:

part movement thereto. JESSE A. GIBSON,

In testimony whereof I have signed my MARC RYAN. 

